As someone who drives around Pennsylvania a lot, I have all the parking apps installed on my phone: ParkMobile, Pango, MeterUp. I have a credit card on hand for cities that use card-reader meters. The one thing I don’t have — and won’t ever have when I need it most — is change.

But drivers in Philadelphia over the next few months may want to shake out those couch cushions.

The city has suspended its parking app system, MeterUp, and is looking for a new vendor to fill that vacancy. Other forms…